Plow.



w. L. wALToN. PLOW.

APPLICATION FILED JUNE I2, |912.

1 ,209,084. Patented Dee. 19,1916.

3 SHEETS-SHEET llZ@ J4 J3 @e Z7 J7 v Y 5 WMP w. L. WALT'ON.

PLOW. I

APPLICATIQN FILED JUNE 12, 19l2.

' 1,209,084. l y PatentedDeo. 19,1916.

asHEETs-SHEET 2.

. i l kljf/j/ a W. L. WALTON. PLow.

APPLICATION FILED .IUNE12, 1912.

3 SHEETS-SHEET 3.

Patented De@.19,1916.

WILLIAM WALTON, 0F BANTRY, NORTH DAKOTA.

PLOW.

To all whom it may concern:

Be it known that I, WILIIAM L. WAL'roN,v

a citizen of the United States, residing in the town of Bantry, in the State of North Dakota, United States of America, have invented certain new and useful ,Improvements in Plows, of which the following is a specification.

This invention relates to improvements in plows and particularly to the' plow v-and wheel lifting mechanism thereof and the objects of the invention are to provide means coperative with the usual power lifting mechanisms for automatically throwing the same into operation to raise the Cplows upon striking an obstacle in the groun A further object is to provide wheel lifting mechanism automatically coperative with the plow lifting means adapted to cause the wheels vto be brought to the same level when the plows are raised, and it consists essentially of the improved construction hereinafter described in detail in the accompanying specification and drawings. v

In the drawings: Figure 1 is a side elevation of the machine. Fig. 2 is a plan view thereof. Fig. 3 is an elevational detail to an enlarged scale of the blocks on the crank shaft, showing the projecting arms connected to the straight shaft having rollers on theirv ends engaging the blocks, and also the plow beams connected to boxes surrounding the crank shaft. Fig. 4 is a side elevation showin thebell crank lever and means for restoring the left wheel to the same level as the right wheel when the plows are inoperative. Fig. 5 is a plan view showing the subframes to which the left traction wheel is connected. Fig.. 6 is a detail view of one of the plates connected to the end crank on the crank shaft. Fig. 7 is a side View of the cam wheel showing the circular corrugations on the inside periphery and also the worm engaging the teeth on the'outside periphery. Fig. 8 is a side View of the disk and trip dog. Fig, 9 is a plan view of the disk and cam wheel said disk and wheel being separated on the shaft in this view. Fig. 10 is a detail showing a side view of the front ends of the plow beams with rollers designedl to slide in suitableV the frame aving land and furrow traction specification f Letters rate-nt. Patented Dee, 19, 1916, Application led J' une 12, 1912. Serial N5. 703,239.

wheels 2 vand 2, power plant 4, transmission gear 5, rear guiding wheel 11 and seat 34 @11D sTATEs rA'raN'r4 ocE.

shafts 6 carrying sprockets 7 connected through thcmedium of the chains 10 with the sprockets 8on the shafts 9 of the tracv tion wheel.

`as to bring the traction Wheels on the same level relatively to the frame 1 when the Vplows 16 are raised'.

The plows 16 are supported on the plow beams 15 having their upper sides'connected to the shaft 12 which is provided with crank ends rotatably mounted in the bearings 13 -so that when the said shaft is rotated' Vertical motion is transmitted to the plows.

Rotatably mounted on one of the crank ends of the shaft 12 is a gear wheel 23 having peripheral teeth 25 adapted to mesh with the worm 26Vsuitably driven from thev source of power and being further provided on its inner periphery with an annular series of circular depressions 24, the object of which will be made clear hereafter. j

Coverating with the gear wheel 23'fis a disk 1 rigidly mounted on the shaft I2 and provided with notches 18 on diametrically opposite sides of its'periphery adapted to coact with the pawl 37 pivotally mounted on the bracket 36 and designed to be normally held in contact with the periphery of the disk by means of the spiral spring 38. This disk also carries a crank shaped dog 19 extending transversely therethrough and pivotally mounted therein and equidistantly spaced from the notches 18v one armgof the dog having a roller 21 rotatably mounted thereon and designed to engage with the depressions 24 in the gear 23 while the other am 2O is adapted' to act as a tappet lever toI facilitate in disengaging the roller from the said depressions. u

The roller 21 is adapted normallyto held in contact with the depressions 24 y means of the compression spring 22, the dog 19 being operated by a V-shaped trip Q r Laoeboa the transversely extending shaft 27 carried by the bearings 28 supported by the frame and is designed to be turned by a suitabletread pedal 29 mounted eithery on the shaft direct or on the frame 1, in the latter-case the pedal being provided with y an integral operating lever 29a suitably connected to the lever 35 on the shaft 22 by.

means of the link 35a. The lever 33 is held in the desired position by a spring detent mounted in the frame 1 and preferably formed with corrugationsvadapted to embrace the arm 44 of the said lever.

The forward ends 39 of the plow beams 15 are adjustably vsupported by rollers 40 operating in. channel cams 41 carried by the frame 1 and formed as shown in Fig. 10 with an inclined portion terminating at the top and bottom in parallel horizontal portions.

When the shaft 12 has been rotated to elevate the-.plows 16, it will' be readily seen that the plows, due to the throw of the cranks on the shaft, are drawn backwardly,

- the motion bengtransmitted to the plow beams 15 so that the rollers 40 on the ends 39 of the beams are drawn up the incline to the inner end of the cams 41 resulting in an elevating of thev point of the plow which consequently cuts upwardly out of the ground as it is being elevated.

The motion is reversed when the plows 16 are being lowered, since on the shaft 12 being rotated the plows 16 are pushed forwardly so that the rollers 40 carried by the ends 39 of the Plow beams 15 descend on the incline and are pushed to the front end of the cams 41 resulting in a lowering'of the point of the plows 16 which consequently cut into -the ground.

ATo cause .the plows to be lifted automatically when excessive pressure comes upon them, flat cam blocks 30 are adjustably mounted in the crank shaft 12 and adapted to be engaged by a roller 32 carried by the lever 31 mounted on the shaft 27.

Should the plows when lowered strike an obstacle, the undue pressure brought to bear on the crank shaft 12 will cause it to turn slightly' whereupon the cam blocks 30 engaging with the rollers 32 will force the levers 31 downwardly turning the shaft 27 and trip lever 33- which is adapted to release the dog 19, thereby permitting of rotary motion being transmitted .fromD the gear 23 to the disk 17 y and consequently vraise the plows 16.

l Simultaneously with the elevating or lowi ering of the plows the land traction wheel 2 is adapted to be brought to the desired position relatively to the frame 1 by a mechanisxn to be presently described.

Bell crank levers 50 are pivotallymounted on brackets 49 carried by the frame 1 and are each provided on one arm with rollers 52 designed to engage the upper side of the 'odset arms of the yoke 3 and having the other arm 5 1il connected by a link 58' with the crank 54 formed on an extension of the shaft 12, which crank is arranged at substantially right angles to the crank ends of the said shaft.

It is desirable that adjustmentxshould be provided so that the depression of the yoke 3 to the desired position is readily obtainable and to this end I provide a strap 55 carrying a boss rotatably mounted .in the crank 54 and being provided on its opposite end with a plurality of holes 57 adapted to engage the adjacent end of the link 58.

During the movement of the oke 3 it is the V-shaped trip lever 33 thereby disengaging the stub end 45 of the arm 44 from the arm 20 of the dog 19, permitting of the roller 21 to engage with the depressions 24 in the gear 23 so that rotary motion is transmitted to the shaft 12 through the medium of the disk 17.

It will be readily understood that during the operation of elevating or lowering the plow the disk 17 is adapted to rotate half a revolution and that as the disk- 17 is being rotated the arm 2O of the dog 19 when at its highest position is engaged by the hooked end 43 of the arm 42, thereby disengaging the roller 21 from the depressions 24 and bringing the disk 17 to rest. Simultaneously with this disengagement of the roller 21 from the depressions 24 the pawl 37 automatically engages one of the notches 18 in the disk 17 thereby preventing retrograde movement.

As the shaft 12 is rotated the motion is transmitted to the beams 15 elevating the plows 16 which as has been previously mentioned are drawn backwardly, causing the rollers 40 of the ends 39 of the beams to be elevated so raising the point of the plows which are then adapted while being raised to cut upwardly out of the soil.

Sultaneously v,with the elevating of the plows the crank 54 transmits its motion through the links 58 to the bell cranks 50 vVhen the plows 16 are lowered the opera-V tion above described is reversed, the motion being primarily transmitted to the rear end of the tread lever 29 which rotates the shaft 27, and consequently operates the trip lever 33 disengaging the hooked end 43 of the arm 12 from engagement with the arm 20 of the dog 19 whereupon the roller 21 engages the depressions 24 of the gear 23 and rotary motion is transmitted to the disk 17.

When the disk 17 has been rotated through half a revolution the arm 20 of the dog 19 engages with the stub end 45 of the arm 44 disengaging the roller 21 from the depres sions 24 in the gear wheel 23 thereby permitting of the disk 17 to come to rest at each instance the pawl 37 engages with the notch 18 and prevents retrograde movement. During this motion of the disk 17 the plows 16 are lowered and as has been already described the ends 39 of the beams 15 are pushed toward the front end of the cams 41 thereby lowering the point of thev plows which are adapted to cut into the soil. The yoke 3 is also simultaneously lowered to permit of the landtraction wheel 2 coming to the desired level relatively to the frame 1 and this being accomplished through the backward motion of the arm 51u of the bell crank 50 which through engagement of the roller 52 with the yoke causes therear end of the said yoke to be depressed permitting of the wheel coming to the desired position.

It will be understood that the frame 1 should under all conditions be kept level, thereby insuring that the furrows cut will be of equal depth, but since in the operation of the plow the furrow traction wheel 2a will lie lower than the land traction wheel 2 it is necessary that the latter be capable of vertical adjustment so that the frame may be kept in the desired position.

From the foregoing it will be seen that the plows may be lifted or lowered by the plow beams controlled by the driver and may also be raised automatically upon striking an obstacle and further that the traction wheels will be simultaneously and automatically brought to the desired level when the plows are operated.

What I claim as my invention is:

1. In a plow, power actuated means for raisin and lowering the plow shares into operatlve and inoperative position respectively, sad means being controlled by the operator of the plow, and automatic means coperative therewith for raising the plow shares should the same strike an obstacle, as and for the purpose speciied. y

2. In a motor operated plow, the comb-ination with a main frame, an engine on said frame, traction wheels near the front of the main frame, and a guiding wheel at the rear of the main frame, said traction wheels being suitably driven by an engine located on the main frame, plows and'means driven by the engine for lowering and raising the plows, said means being actuated by the operator, and automatic means coperative therewith forlraising the plow shares should the same strike an obstacle as and for the purpose specified.

3. In a motor operated plow, and in combustion, an engine, -plow l@lift mechanism operated by the engine, a wheel lift mechamsm and automatic means coperating therewith for both actuatingv the plow lift and the wheel lift mechanism should the plow share strike an obstacle.

. 4. In a plow and in combination, a frame, land and furrow traction wheels' on the frame, plow lifting mechanism, means for automatically and manually actuating the plow lifting mechanism and means coperating with the rst said means for simultaneouslyv adjusting the land traction wheel relatively to the frame.

` 5. In a plow and in combination, a frame, land and furrow traction wheels on the frame, plow lifting mechanism, automatic means for both actuating the plow lift and adjusting the land traction wheel should the plow share strike an obstacle, said means including a crank shaft operatively connected to the plows and land traction wheel,

Aand means normally restraining the turning of the crank shaft but adapted to yield under pressure.

6. In a plow and in combination, a plurality of plow beams, plows thereon, an engine, plow lift mechanism operated by the engine and connected to the plow beams, means lthrown into operation by excessivel pressure on the plows for throwing the plow lift mechanism into operation, and means for tilting the points of the plows simultaneously with the elevation thereof.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

WILLIAM L. WALTON.

Cotootoim Eo, Miers Patent No., tvzliga Umea.

it is homby cortiod that im Lattor' Ptnt No. 11,209,08t, granted December t9, 192,16, upon the appl-motion of William. L. Walton, of Bantry, North Dakota, for' an improvement in Plow'sf an error appoats in the printed specioation 'requiring oneotion as follows: Pag 3, lines 83-84, claim 3, for th word .combustion read @ambt/tation; and that the said Letters Patent should be rood with this correction 'therein that the same may oonfom to tho recordof the coso in tho Potent Signed and seated this 20th doyv of February, A. D.; 1917.

- y 1F. W. H. CLAY,

Acfiag ommootomw of Paitto 

